|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Cephalopoda - Ceratitida - Beyrichitidae
It was reranked as Ceratites (Gymnotoceras) by Hyatt and Smith (1905).
It was assigned to Ceratites by Hyatt and Smith (1905); to Ceratitidae by McLearn (1969); to Beyrichitidae by Astakhova (1976); to Beyrichitinae by Tozer (1981) and Tozer (1994); and to Ceratitida by Sepkoski (2002).
|Year||Name and author|
|1877||Gymnotoceras Hyatt p. 110|
|1905||Ceratites (Gymnotoceras) Hyatt and Smith p. 172|
|1914||Acrochordiceras foltzense Smith p. 39 figs. Pl 22, figs 13,14|
|1969||Gymnotoceras McLearn p. 24|
|1976||Gymnotoceras Astakhova p. 132|
|1981||Gymnotoceras Tozer p. 92|
|1994||Gymnotoceras Tozer p. 118|
|2002||Gymnotoceras Sepkoski, Jr.|
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.